Process kinetics and digestion efficiency of anaerobic batch fermentation of brewer's spent grains (BSG)

Ezeonu, F. C.; Okaka, A. N. C.

doi:10.1016/0032-9592(94)00064-6

Cited by 20 publications

(11 citation statements)

References 7 publications

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“…Contents of the rumen of a cow immediately after slaughter were collected from a slaughterhouse in Aduthotti, Chennai, India, and were transported to the laboratory in an oxygen-free container. The contents were strained using cheesecloth and the liquor was used as the digester inoculum (Ezeonu and Okaka 1996). To accelerate the start-up, 40% (v/v) slurry was mixed with the feed as recommended in earlier studies (Hickey et al 1991;Shapiro and Switzenbanum 1984).…”

Section: Seed and Inoculationmentioning

confidence: 99%

Treatment of Sago Wastewater using Hybrid Anaerobic Reactor

Banu

Kaliappan

Beck³

2006

Water Quality Research Journal

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Sago, tapioca starch, is manufactured by over 800 small-scale units located in the Salem district of the State of Tamilnadu, South India. These units generate large quantities of high-strength wastewater requiring elaborate treatment prior to disposal. The present study is an attempt to treat the sago wastewater using a hybrid reactor, which combines the advantages of both fixed-film and up-flow anaerobic sludge blanket systems. A hybrid reactor with a volume of 5.9 L was operated at organic loading rates varying from 10.4 to 24.6 kg COD/m3d. After 120 d of start-up, an appreciable decrease in COD and efficient removal of solids were evident. The COD removal varied from 91 to 83%. While the removal of total solids was in the range of 56 to 63%, that of volatile solids varied from 67 to 72%. The methane production during the study period was in the range of 0.11 to 0.14 L CH4/g COD-d and the percentage was from 55 to 67%. The ideal organic loading rate (OLR) was determined on the basis of tolerance of the reactor towards higher organic loading rate and it was found to be 23.4 kg COD/m3d. The findings of the study open new possibilities for the design of low-cost and compact on-site treatment systems with very short retention periods.

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Section: Seed and Inoculationmentioning

confidence: 99%

Treatment of Sago Wastewater using Hybrid Anaerobic Reactor

Banu

Kaliappan

Beck³

2006

Water Quality Research Journal

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“…If compared to standard first order kinetics where the disintegration kinetic constant depends both on the nature and PSD of the organic substrate, the main advantage of this approach is that K sbk only depends on the organic substrate nature as the PSD is taken into account by the coefficient a*. Therefore simple laboratory-scale experiments [23,24] carried out on OFMSW samples of any PSD are sufficient to determine the proper K sbk value. …”

Section: Discussionmentioning

confidence: 99%

Modelling the effect of the OLR and OFMSW particle size on the performances of an anaerobic co-digestion reactor

Esposito

Frunzo²,

Pánico

et al. 2011

Process Biochemistry

107

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“…Pivski trop se može koristiti za proizvodnju biogasa. Biogas je mešavina 60--70% metana, ugljen-dioksida, vodonika, azota i ugljen--monoksida [15,16]. Proizvodnja biogasa obuhvata dve faze: hidrolizu tropa i metanogenezu.…”

Section: Pivski Trop Kao Sirovina Za Proizvodnju Biogasaunclassified

“…U fazi metanogeneze, mikroorganizmi u prvom koraku razgrađuju makromolekule do isparljivih masnih kiselina, acetata, butirata i propionata. Iz ovih isparljivih kiselina, tokom dalje fermentacije metanogeneze, bakterije proizvode metan [15].…”

Section: Pivski Trop Kao Sirovina Za Proizvodnju Biogasaunclassified

“…Sve više prisutna svest o zaštiti okoline i smanjenju zagađenja dovodi do razvoja novih tehnologija za iskorišćenje sporednih proizvoda. Pivski trop se može primeniti kao: stočna hrana [5][6][7][8], dodatak proizvodima namenjenim za ljudsku ishranu [9,10], sirovina u biotehnologiji, sirovina za proizvodnju građevinskog materijala [11], proizvodnju uglja [12], papira [13], energije [14][15][16][17] i adsorbens [18][19][20][21][22]. Na slici 2 dat je pregled primene tropa u biotehnologiji, što je detaljnije opisano u ovom radu.…”

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Possible application of brewer’s spent grain in biotechnology

Pejin

Radosavljevic

Grujic

et al. 2013

Hem Ind

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Brewer?s spent grain is the major by-product in beer production. It is produced in large quantities (20 kg per 100 liters of produced beer) throughout the year at a low cost or no cost, and due to its high protein and carbohydrates content it can be used as a raw material in biotechnology. Biotechnological processes based on renewable agro-industrial by-products have ecological (zero CO2 emission, eco-friendly by-products) and economical (cheap raw materials and reduction of storage costs) advantages. The use of brewer?s spent grain is still limited, being basically used as animal feed. Researchers are trying to improve the application of brewer?s spent grain by finding alternative uses apart from the current general use as an animal feed. Its possible applications are in human nutrition, as a raw material in biotechnology, energy production, charcoal production, paper manufacture, as a brick component, and adsorbent. In biotechnology brewer?s spent grain could be used as a substrate for cultivation of microorganisms and enzyme production, additive of yeast carrier in beer fermentation, raw material in production of lactic acid, bioethanol, biogas, phenolic acids, xylitol, and pullulan. Some possible applications for brewer?s spent grain are described in this article including pre-treatment conditions (different procedures for polysaccharides, hemicelluloses, and cellulose hydrolysis), working microorganisms, fermentation parameters and obtained yields. The chemical composition of brewer?s spent grain varies according to barley variety, harvesting time, malting and mashing conditions, and a quality and type of unmalted raw material used in beer production. Brewer?s spent grain is lignocellulosic material rich in protein and fibre, which account for approximately 20 and 70% of its composition, respectively.

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Process kinetics and digestion efficiency of anaerobic batch fermentation of brewer's spent grains (BSG)

Cited by 20 publications

References 7 publications

Treatment of Sago Wastewater using Hybrid Anaerobic Reactor

Treatment of Sago Wastewater using Hybrid Anaerobic Reactor

Modelling the effect of the OLR and OFMSW particle size on the performances of an anaerobic co-digestion reactor

Possible application of brewer’s spent grain in biotechnology

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